Isothermal-combustion control for oil-burning heaters



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Patented duly 5, i927.

JAMES L. BREESE, JR., OF CHICAGO, ILLINOIS, ASSIGNOR TO OIL DEVICES CORPORA- TION, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

ISCTHEEMAL-CCMBUSTION .CONTROL FOR CIL-BURNING HETERS.

.Application led August 5, 1926. Serial No. 127,217.

My invention relates to a thermostatic or isothermal control for heaters and hasy t'or its particular purpose to provide an automatic fuel control particularly adapt. `able, although not limited to7 a small hydrocarbon burning unit. One object of the invention is the provision ot' means for automatically controlling the fuel inlet valve in response to changes in temperature. Another object is the provision of such a valve controlling means, including an elongated element dlrectly exposed to the heat of combustion. @ther objects will appear from time to time in the course of the speciication and claims.

l illustrate my invention more or less diagrammatically in the accompanying drawings, wherein-e .Figure l is a vertical section;

F'gure 2 is a Vdetail sectional view of the top portion of the rod; and

Figure 3 is a detail section of the lower end of the rod and valve.

Like parts are indicated by like members throughout the specification and drawings.

A. generally indicates a stove or burner unit having the lower cylinder A1 and the upper cylinder A2 with the intermediate connecting and supporting member A centered in the cylinder A1 by the ila-nge A4 and supported onit by the outwardly projecting ange A5.. The member A8 terminates in the ldownwardly turned inner vange A@ about its central aperture.

B is any suitable cover member for the I cylinder A2 and is provided with the exhaust oulet B1 with the chimney B2. .d

C is an inner cylinder positioned within the c linder A1 and centered'for example by the ange Aer/of the member A1. It is providedl with a generally concave bottom C1 having the inlet opering C2.. It is herein .shown as provided, with an inner layer C8 oi sand or similar finely divided material. v

The/member C1 has screw threaded 'into fuel litre D1 'outwardly throu h .the cylinder A1 to the 'fuel supply tank `iis-provided with a top D3, generally horizontal partition l)A1 anda lower oat chamber DEs with the lioat l)6 therein. `D generally indicates a'ny suitablevalve controlled by the handle Ds and adapted to engage the valveY seat D2 controlling the passage D1.'

vso V.suspended that 2.1 Such tankt The valve member D is provided with a valve seat D and a lower closure D12 aligned therewith. v

E is an inlet closure member in the to B of the stove. Screw threaded into it 1s the rotatable sleeve E1 which may be controlled Jfor example by the handle E2 herein shown. as having a hinged or pivoted eX- tension Ef. Loosely slidable in the sleeve E1 is the hollow open-topped rod Et to the top of which is screw threaded any suitable adjusting nut E5 for raising or lowering the rod in relation to the sleeve E1 in which it is more or less loosely suspended. E are air apertures in the lower portion of the rod and E? is a generally conical lower tip adapted to engage the valve set D10 in response to the extension of the rod E4. E8 is a needle valve designed to regulate the flow of air in the hollow rod E4. lt is screw threaded in the bracket E9 secured to the upper end of the rod E4.

It will be realized that whereas l have described and shown a practical and operative device nevertheless many changes might be made in the size, shape, number and disposition of parts without departing from the spirit of my invention and l therefore wish my description and drawings to be taken as ina broad sense illustrative and diagrammatic rather than as limiting me to my specific showing.

The use and operation of my `inventionare as follows:

l provide a thermostatic control for a heater, herein illustrated as anv oil burner,

l comprising athermostatic member adapted to expand or contract in response to changes in temperature of the stove itself or of its interior, such thermostatic memberv being preferably but not necessarily vexposed directly to the heat and -flame of the combustion of the fuel it controls. In the form herein shown l suspend la ylong,y rod from 'Athejtop of thestove, the rod being supportitgthe valve body D, from' which extendsthe/4 ed yinan adjustingnut and being'normally when co'oF, the valve end of the bottom of he rod is somewhat withdrawn from a valve seat in the fuel line..

rectly exposed to it and expands. The stovev 'lll as a whole also expands but the rod expands more rapidly` and thus tends to restrict the flow of oil. By providing an yadjustable support for the rod, for example the screw threaded nut'l am able to set the rod either to cut off the fuel altogether when heated to a predetermined temperature or else to reduce the fuel flow to alpredetermined and controllable minimum. 'llhere can be no' cramping between valve and valve seat7 no matter what the expansion of the rod or\ what the setting of the support, because the rod is loosely suspended or slidable in the adjustable support.

f fuel well in the fuel line to insure a store of fuel sufficient to maintain at least 'a slight` flame until the cooling of the rod` againv withdraws it from the valve seat'.

l claim:

l. A heating device and control therefor, including a burner, a fuel line extending thereto, a valve seat in said fuel line, and a t-hermostatic member comprising afhollow rod suspended above such valve seat and terminating in a va'lve member shaped to .conform to such seat, land an outside air connection adapted topermit air to circulate through the interior of such rod.

2. A heating device and'control therefor, including a burner, a fuel line extending thereto, a valve seat'in said fuel linea'ndl a thermostatic valve member and supporting means therefor, said thermostaticl member adapted to approach and recede' from said valve seat in response to fluctuations in temperature, and being directly subjected to the llame of the burning fuel of the burner.

3. A heating device and control therefor.,

including a burner, a fuel line extending thereto, a valve seatv in said fuel line and a hollow thermostatic valve rod member and supporting means therefor, said thermostatic member-adapted to approach and recede from' said valve seat 1n response to fluctuations in /temperature, and .an outside air p connection adapted to permit air to ciruculate through the interior ofsuch rod.

4. A heatlng device and control therefor, including a burner, a fuel line extending thereto, a valve seat in said fuel line and a hollowthermostatic valve rod member and' supporting means therefor, said thermostatic member adapted to approach and recede from said `*valve seat in response to fluctuations in temperature, .and an outside air coninesatte' nection adapted to permit air to circulate through the interior of such rod, and means for control/ling such circulation of air.

5. A heating device and control therefor, including a burner, a fuel line extending thereto, a.v valve seat in said fuel line an a hollow thermostatic valve rod member and supporting means therefor, said thermostatic member adapted to approach and recede from said valve lseat in response to Huctuations in temperature, and an outside air connection adapted to permit air to circulate through the interior-of such rod, and adjustable means for controlling such circulation of air.

6. A heating device, and a control therefor, including. a stove body, a burner therewithin, a fuel line extending to the burner,

a valve 'for said fuel line, the valve seat thereof being located beneath and in line with the top of said stove, and a thermostatic rod suspended from the top of sa'id stove and extending downwardly through the burner and having a `valve member at the lower end thereof adapted to engage* said valve seat when the rod is extended in response to the heat of combustion.

7. A heating device, and a control therefor,including a stove body, ai burner' therewithin, a fuel line extending to the burner, a valve for said fuel line, the valve seat thereof being .located beneath and in line with the top of said stove, and a thermostaticirody suspended from the top of said stove and extendingdownwardly through the burner and having a valve member at the lower end thereof adapted to engagel said valve seat when the rod is extended in response to the heat of combustion, the top of said rod projecting upwardly through the top of the stove, the rod being hollow and being previded with an exterior air-inlet and with air outlets positioned in the lower portion of the rod.

8. A heating device, and a control therefor, including a stove body, a burner therewithin, a fuel line extending to the burner, a valve for' said fuel line, the valve seat thereof being locahad beneath and in line with the top of said stove, and a thermostatic rod` suspended from thetop of said stove and -extending downwardly through the burner and having a valve member at the lower end thereof adapted to engage said valve seat when the rod is extended in response to the heat of combustion and means` for axially adjusting the position'of said rod in relation to the stove top. v

` 9. A heating device, and a control therefor, including a stove body, a burner therewithin, a fuel line extendlng to the burner,

a valve for said fuel line, thel valve seat y with the to of said stove, anda thermostatic rod suspen ed from the top of said stove and .thereof being located beneath andy in line extending downwardly through the burner and having a valve member at the lower end thereof adapted to engage said valve seat when the rod is extended in response to the heat of combustion and means for axially adj usting the position of said rod in relation to the stove top, comprising a sleeve in screw fitted relation to the stove top.

10. A heating device and a control therefor, including a stove body, a burner therewithin, a fuel line extendingto the burner, a valve for said fuel line, the valve seat thereof being located beneath and in line with the top of said stove, and a thermostatic rod suspended from the top of said stove and extending downwardly through the burner and havin a valve member at the lower end thereo adapted to engage said valve seat when the rod is extended in response to the heat of combustion and means for axially adjusting the position of said rod in relation to the stove top, comprising a sleeve in screw fitted relation to the stove top, and a handle therefor, the rod being slidably mounted in said sleeve. v

1l. A heating device andcontrol therefor, including a burner, a fuel line extending thereto, a valve seat in said fuel line and a thermostatic valve member and supporting means therefor, said thermostatic member being directly subjected to the flame of the burning fuel, and being adapted to approach and recede from said valve seat in response to iuctuations in temperature caused by fluctuations in the flame of said fuel, and means, operable from the exterior of the heating device, for adjusting said thermostatic member in relation to said valve seat.

12. A heating device and control therefor, including a burner, a fuel line extending thereto, a valve seat in said fuel line and a thermostatic valve member and supporting means therefor, said thermostatic member being directly subjected to the flame of the burn-ing fuel, andbeing adapted to approach and recede from said valve seat, in response to fluctuations in temperature caused by fluctuations'in the flame of said fuel, and means, operable from4 the exterior of the heating device, for adjusting said thermostatic member in relation to said valve seat, said means including an adjusting member screw threaded in relation to the top of said justing said the'rmostatic member in relation. to said valve seat, and a nut, 1n screw` threaded relation with the upper portion of said rod, adapted to engage said adjusting member.

Signed at Chicago county of Cook and State ofIllinois, this 28th day of July 1926.

JAMES L. BREESE, JB.

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